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float: check comparison ULPs is sensible

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Danny Robson 2015-01-22 00:24:34 +11:00
parent b02aa2e568
commit aca28a65e5
1 changed files with 5 additions and 0 deletions
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float.cpp
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@ -101,12 +101,17 @@ ieee_float<E, S>::almost_equal (floating_t a,
} }
// Based on the cynus `AlmostEqualUlps`
template <unsigned int E, unsigned int S> template <unsigned int E, unsigned int S>
bool bool
ieee_float<E, S>::almost_equal (floating_t _a, ieee_float<E, S>::almost_equal (floating_t _a,
floating_t _b, floating_t _b,
uint_t ulps) uint_t ulps)
{ {
// Ensure ULPs is small enough that the default NaNs won't compare as
// equal to anything else.
CHECK_LE (ulps, 4 * 1024 * 1024);
union { union {
floating_t f; floating_t f;
sint_t s; sint_t s;